Baker&#39;s oven.



G. A. KRABERfi. S. VIERECK.

BBBB RS OVEIL.

N o M o d a I ication filed New. 29 1 Patented Nov. I4, I899.

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0 @dm w m w WNW UNITED STATES PATENT OFFICE.

GERRIT A. KRABER AND SAMUEL VIEREOK, OF PITTSBURG, PENNSYLVANIA.

BAK-ERS OVEN.

SPECIFICATION forming part of Letters Patent No. 637,132, dated November 14;, 1899.

Application filed November 29, 1898. Serial No. 697,760- (No model.)

To all whom it may concern.-

Be it known that we, GERRIT A. KRABER and SAMUEL VIEREoK, citizens of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Portable Steel-Frame and Brick Ovens, of which the following is a specification, reference being had therein to the accompanying drawings. v

Our invention relates to certain new and useful improvements in bakers ovens.

The object of our invention is in the adaptation of a frame composed of a series of suitably-arranged elongated angle-irons, beams, and braces for use in the construction of bakers ovens, as well as a corrugated metal support for the hearths, so that in conjunction with the frame the oven can be easily set up and knocked down and the frame reused when desired.

Our invention consists of the novel combination and arrangement of parts hereinafter more fully described,and particularly pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, wherein like numerals of reference indicate corresponding parts throughout the several views thereof, and in which- Figure 1 is a, front view of our improved oven, partly in section, showing in dotted lines a pair of arches arranged therein and also in dotted lines the fume-conducting flue and the steam-inlet flues. Fig. 2 is a side view thereof, partly broken away, showing the position of the double damper. Fig. 3 is a vertical sectional view on the line was, Fig. 1. Fig. 4 is a perspective view of our knockdown frame, the supporting-bolts therefor, and also the strengthening-braces.

Referring to the drawings by reference-mt merals, 1 indicates the supports or standards, which consist of I-beams having the plate 2 secured to their base. This plate is adapted to be fastened to the floor, if so desired, by having the apertures 3 formed therein to receive suitable fastening means. The edges of the supports or standards are secured thereto at their top by means of the angle-irons 4.

Mounted upon the standards or supports 1, at the front and rear thereof, are the elongated angle-irons 5 and 6. Supported by the said angle-irons are the beams 7, 8, 9, and 10, which. are adapted to be secured thereto by any suitable means, as shown at 11.

Connected to and supported by the beams 7, 8, 9, and 10, at each end thereof, by the smaller angle-irons 12 in any desirable manner (only one shown) are the vertical elon gated angle-irons 13, 14, 15, 16, 17, 18, 19, and 20, which may be of any desired length, the angle-irons 13, 16, 17, and being arranged at each corner of the frame, and these we term the corner angle-irons, and the angle-irons 14, 15, 18, and 19 are also secured in a like manner to have one portion thereof project outwardly, as shown. These angle-irons We term the front and back angle-irons.

Secured to and supported by the beams 7 and 8 in the same'manner as the front and back angle-irons are the vertical elongated angle-irons 21, 22, 23, and 24, these an gle-irons being fastened to the beams in the same manner as the front and back angle-irons-that is, having a portion thereof projecting outwardly. These irons we term the side angle-irons.

The an gle-irons are braced by means of the elongated metallic ties and 26, which are secured thereto by means of the nuts 27 and 28, operating on the screw-threaded outer ends thereof.

The beams are braced by means of the metallic tie-rods 29 and 30, which are secured thereto by means of the nuts 31 and 32, operating on the screw-threaded ends thereof, as shown, each of the tie-rods being of the length requisite to brace the beams.

Connected to the angle-irons 13, 21, 22, and 17 are the supporting angle-irons 33 34, and secured to the angles 16, 23, 24, and 20 are the supporting angle-irons 35 36. Theseirons are held in position by means of the nut 37, operating upon the screw-bolts 38. The angle-irons 33, 34, 35, and 36 are arranged so that one pair thereof will project inwardly, forming a supporting-plate for the arches 39 and 40, which are arranged at the top of each oven, as shown, and a fire-box and gas box or furnace. These arches extend across the entire length of the oven and are formed of brick, as shown.

41 indicates the upper walls of the oven, which are constructed of a single layer of brick and are supported by the angle-irons, as shown. These walls are separated from the lower walls 42 by means of the angle-irons 5 and 6 and the beams 7 and 10. Supported by the lower extension of the beams is the support 43 for the lower hearth 44 and which consists of a sheet of corrugated metal of the desired length and which is adapted to receive on its upper face a packing of sand 45, on which the hearth rests. The support for the upper hearth 46 of the gas-furnace or the plate of the furnace of the upper oven is supported by thearches 39, having a suitable packing of sand 47, on which the hearth rests. The sand is also adapted to keep the heat within the oven.

The doors 48, which are used for the entrance of the upper and lower ends, as well as the fire-box, are adapted to be secured to the frame 49 thereof at their inner ends, and these frames are of sufiicient width, as shown, to allow of having apertures 50 formed therein, which coincide with the perforated part of the fume-discharging pipe 51, which is adapted to carry 0% the fumes which escape from the oven or fire-box when the doors are opened. The fume-pipe 51 is connected to the auxiliary fume-pipe 52 (shown in dotted lines, Fig. 1) for the upper oven. The outer end of the fume-pipe 51 is connected to a stack 53, as shown, as well as the outlet-pipe 54 from the gas box or furnace. The stack 53 opensinto the lower series of ovens to allow the discharge therefrom of the smoke or other matters from the fire-box and also the oven, as wellas to obtain the desired draft. The stack 53 is provided with a double damper 54, the outer end thereof being shown in Fig. 2.

The gas box or furnace is provided with gas-inlet supply-pipes 55.

55' indicates an opening arranged in front of the oven, communicating with the gas-box to allow of the ignition of the gas. This opening is closed by means of the circular plate which is pivotally secured at one side above the opening.

57 and 58 indicate a pair of steam-pipes for the ejection of steam into the oven.

'59 indicates the door of the ash-pit, and 60 the door of the raising-closet, which are arranged in the lower part of the furnace, as shown.

It is thought that the many advantages of our improved oven can be readily understood from the foregoing description, taken in connection with the accompanying drawings.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of our invention.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In an oven, a series of elongated vertical corner, side, back and front angle-irons, a series of horizontal elongated beams adapted to support the said angle-irons, aseries of clon gated horizontal brace-rods suitably secured to the said angle-irons, and a series of horizontal angle-irons 33, 34 suitably secured to the side and a portion of the corner angleirons for supporting the arches of the ovens, substantially as set forth.

2. In an oven, a series of elongated vertical corner, side, back and front angle-irons, a series of horizontal elongated beams adapted to support the said angle-irons, a series of elongated horizontal brace-rods suitably secured to the said angle-irons, a series of horizontal angle-irons 33, 34 suitablysccured to the side and a portion of the corner angle-irons for supporting the arches of the ovens, and corrugated sheets of metal secured upon the said beams for supporting the lower hearths of an oven, substantially asset forth.

In testimony whereof We affix our signatures in the presence of two witnesses.

GERRIT A. KRABER. SAMUEL VIERECK. \Vitn esses:

JOHN NOLAND, ALBERT J. WALKER. 

